rand: reorganize: phase 2

vlib/time/misc/misc.v

@@ -8,5 +8,5 @@ const (
 )
 // random returns a random time struct in *the past*.
 pub fn random() time.Time {
-	return time.unix(rand.next(int(start_time_unix)))
+	return time.unix(int(rand.u64n(start_time_unix)))
 }

vlib/time/misc/misc_test.v

@@ -3,7 +3,7 @@ import rand
 
 fn test_random() {
 	// guarantee CI test stability, by seeding the random number generator with a known seed
-	rand.seed(0)
+	rand.seed([u32(0), 0])
 	t1 := tmisc.random()
 	t2 := tmisc.random()
 	t3 := tmisc.random()